1 | <?php |
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2 | |||
3 | /** |
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4 | * @package s9e\TextFormatter |
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5 | * @copyright Copyright (c) The s9e authors |
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6 | * @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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7 | */ |
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8 | namespace s9e\TextFormatter\Configurator\Collections; |
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9 | |||
10 | use s9e\TextFormatter\Configurator\Helpers\RegexpBuilder; |
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11 | use s9e\TextFormatter\Configurator\Items\Regexp; |
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12 | |||
13 | class HostnameList extends NormalizedList |
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14 | { |
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15 | /** |
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16 | * Return this hostname list as a regexp's config |
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17 | * |
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18 | * @return Regexp|null A Regexp instance, or NULL if the collection is empty |
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19 | */ |
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20 | 8 | public function asConfig() |
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21 | { |
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22 | 8 | if (empty($this->items)) |
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23 | { |
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24 | 1 | return null; |
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25 | } |
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26 | |||
27 | 7 | return new Regexp($this->getRegexp()); |
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28 | } |
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29 | |||
30 | /** |
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31 | * Return a regexp that matches the list of hostnames |
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32 | * |
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33 | * @return string |
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34 | */ |
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35 | 7 | public function getRegexp() |
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36 | { |
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37 | 7 | $hosts = []; |
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38 | 7 | foreach ($this->items as $host) |
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39 | { |
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40 | 7 | $hosts[] = $this->normalizeHostmask($host); |
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41 | } |
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42 | |||
43 | 7 | $regexp = RegexpBuilder::fromList( |
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44 | 7 | $hosts, |
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45 | [ |
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46 | // Asterisks * are turned into a catch-all expression, while ^ and $ are preserved |
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47 | 'specialChars' => [ |
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48 | 7 | '*' => '.*', |
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49 | '^' => '^', |
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50 | '$' => '$' |
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51 | ] |
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52 | ] |
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53 | ); |
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54 | |||
55 | 7 | return '/' . $regexp . '/DSis'; |
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56 | } |
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57 | |||
58 | /** |
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59 | * Normalize a hostmask to a regular expression |
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60 | * |
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61 | * @param string $host Hostname or hostmask |
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62 | * @return string |
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63 | */ |
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64 | 7 | protected function normalizeHostmask($host) |
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65 | { |
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66 | 7 | if (preg_match('#[\\x80-\xff]#', $host) && function_exists('idn_to_ascii')) |
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67 | { |
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68 | 1 | $variant = (defined('INTL_IDNA_VARIANT_UTS46')) ? INTL_IDNA_VARIANT_UTS46 : 0; |
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69 | 1 | $host = idn_to_ascii($host, 0, $variant); |
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70 | } |
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71 | |||
72 | 7 | if (substr($host, 0, 1) === '*') |
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73 | { |
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74 | // *.example.com => /\.example\.com$/ |
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75 | 1 | $host = ltrim($host, '*'); |
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76 | } |
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77 | else |
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78 | { |
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79 | // example.com => /^example\.com$/ |
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80 | 6 | $host = '^' . $host; |
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81 | } |
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82 | |||
83 | 7 | if (substr($host, -1) === '*') |
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84 | { |
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85 | // example.* => /^example\./ |
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86 | 1 | $host = rtrim($host, '*'); |
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87 | } |
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88 | else |
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89 | { |
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90 | // example.com => /^example\.com$/ |
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91 | 6 | $host .= '$'; |
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92 | } |
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93 | |||
94 | 7 | return $host; |
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95 | } |
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96 | } |
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: